Agree. Keep the RPMs up in the 3's and the 3.0 does fine.
No mods required if you have the factory towing package, with tranny cooler and added brake controller.
I have a few mod changes which helps acceleration, not necessarily mpg.
Kids have used my 3.0 to pull a 2800 lb 17 ft Fun Finder camper with fully loaded cab
with 2 adults and 3 small kids, PU box filled with fire wood, and does 2 lane roads speeds fine.
Freeway speeds with the Ranger are a challenge if you are accustom to having a big block V8 truck,
like our 454 dually for a 12,000 lb 5th wheel.
Biggest problem is wind resistance on front of full sized 8 ft tall camper or enclosed trailer.
Have a good trip !!!